Extracorporeal lithotripsy, or extracorporeal shock wave lithotripsy (ESWL), is a procedure in which a shock wave is generated by an extracorporeal lithotripter and focused by the machine on the stone, releasing energy several times to break the stone in the body and eliminate it from the body with urine. Urinary stones are a common disease that can cause complications such as renal colic, urinary tract infection and renal insufficiency, causing great pain to patients. Extracorporeal shock wave lithotripsy is a more effective treatment method, which has unique advantages over drug lithotripsy and surgical lithotripsy, and is currently the preferred treatment method for urinary stones. It is suitable for the treatment of kidney, bladder and ureteral stones. Lithotripsy precautions: Some complications can occur after extracorporeal lithotripsy, usually the symptoms are mild and do not require special treatment, and can be self-healing. However, if the symptoms are more serious, you need to go to hospital for treatment as soon as possible. 1, proper rest: according to the amount of lithotripsy, if the stone is large, the amount is large, three days after lithotripsy should be bed rest, as little as possible to get out of bed, and take the affected side of the bed, so that the lithotripsy particles as much as possible to slow down the rate of discharge, to avoid or reduce the possibility of forming stone alley formation. Another few application of patients using dulcolax for pain relief will appear dizziness vomiting phenomenon, bed rest for a day to recover. 2, appropriate activities: except for the above mentioned cases, after receiving extracorporeal lithotripsy should be more active, in order to facilitate the discharge of stones. 3, drinking water and rehydration: drinking more water can increase the volume of urine, the flushing of urine is the best way to help the discharge of stones, and can reduce the discomfort of urination, the maximum daily drinking water can be controlled at about 8000ml. You can also increase the amount of urine by replenishing fluids instead of drinking water. 4.Stone removal position: different positions can be used for different parts of the stone to assist stone removal, and special positions may not be used for renal pelvis, upper and middle renal calyces, ureter, bladder and posterior urethra stones. Stones in the infrarenal calyces are better treated in the head-down position. (Inverted three-dimensional position) can be performed according to medical advice. 5.Drug lithotripsy: after extracorporeal lithotripsy, it is better to combine Chinese and Western medicine and lithotripsy treatment, which can be performed according to the doctor’s prescription. 6.Re-examination and re-testing: After lithotripsy, it takes some time to discharge the stone, usually 10-14 days to come to the hospital for re-examination. For larger, harder and multiple stones, it is necessary to lithotripsy again according to the condition. 7. Hematuria: Almost all of them have hematuria after extracorporeal shock wave lithotripsy treatment. Under normal circumstances lithotripsy should be 2 to 3 times hematuria, and in severe cases hematuria should disappear on its own in 2 to 3 days. However, there are cases of longer duration of hematuria, please contact the treating physician for treatment in time. 8, perinephric hemorrhage: the cause of occurrence is related to the patient’s coagulation mechanism disorder, hypertension arteriosclerosis, or the side injury during the impact stone, the kidney is combined with infection and other factors, once this situation occurs, please contact the doctor for treatment. 9, subcutaneous bleeding: petechiae on the skin after lithotripsy, mainly due to the vascular properties of the skin, the skin is less adaptable to energy, generally do not need to deal with, healing does not leave traces. 10.Pain: more common after lithotripsy. Kidney colic formed by stone fragments stimulating the ureter after stone fragmentation is usually not specially treated and will disappear when the stone passes under the stenosis. If the pain is unbearable, antispasmodic drugs can be applied for antispasmodic pain relief or treatment in hospital. 11.Stone collection: In order to clarify the amount of stone discharge, gauze can be used to filter through each urine discharge to understand the discharge of stones.